PASS CCRN 58 Exam Questions And 100% Answers

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PASS CCRN 58 Exam Questions And 100% Answers Which vessel is used as a graft when the minimally invasive direct coronary artery bypass grafting (MIDCABG) procedure is performed? Answer: The internal... thoracic (also called the internal mammary) artery is used for a MIDCABG. Which drug has Class II and Class III properties? Answer: Sotalol has both Class II (i.e., β blockade) and Class III (i.e., potassium blockade) effects. Which of the following is a diagnostic finding in hypovolemic shock caused by severe diarrhea? Answer: The patient lost fluid, so the hematocrit would be increased because the blood is hemoconcentrated. If the patient had lost blood, the hematocrit would be decreased. Platelet-activating factor, development of microclots, and activation of the fibrinolytic system in septic shock set the stage for which of the following? Answer: DIC is initiated by massive tissue and/or endothelial injury. Microclots develop that may cause ischemia distal to the clots and may deplete clotting factors. These clots trigger the fibrinolytic system, causing development of fibrin split products, which have their own anticoagulant effect. Thus stable clots are broken down, and there is an inability to form stable clots. A 75-year-old woman is admitted with pneumonia. She is started on enteral feedings. Over the last several hours, her urine output has been increasing. Which laboratory test is most important at this time? Answer: SERUM GLUCOSE An older patient with infection receiving high-glucose enteral feedings is at risk of developing glucose intolerance and hyperglycemic hyperosmolar state (HHS). Close monitoring of serum glucose and appropriate insulin administration by sliding scale will prevent the development of HHS and the life-threatening dehydration that occurs. A patient with severe hypertension most likely would have which of the following? Answer: An S4 is associated with ventricular noncompliance. A patient with severe hypertension would develop ventricular hypertrophy, which makes the ventricle noncompliant. Which is a normal oxygen consumption index (VO2I)? Answer: Approximately 150 ml/min/m2 Normal arterial oxygen saturation is 100%, and normal venous oxygen saturation is 75%. The tissues used 25%. The normal arterial oxygen content is 20 ml/dl, and normal venous oxygen content is 15 ml/dl. The tissues used 25%. The normal oxygen delivery (DO2) is 1000 ml/min, and normal VO2 is 250 ml/min. The tissues used 25%. The normal DO2I is 600 ml/min/m2, so consider what is 25% of 600 ml/min/m2? The normal VO2I is 150 ml/min/m2 A 16-year-old girl with a history of type 1 diabetes mellitus (DM) is admitted to the critical care unit. Her friend states that she has had a cold for the last few days. She is now lethargic. Diabetic ketoacidosis causes dehydration by: Answer: glucose causing an osmotic diuresis. Remember that osmolality and osmotic pull are increased by the addition of solutes such as sodium or glucose. The high serum glucose in diabetic ketoacidosis causes an increase in osmotic pull in the renal tubules and an osmotic diuresis. Which of the following statements is true regarding the use of patient-controlled analgesia (PCA) in surgical patients? Answer: USE LESS MEDICATION Patients who can control their own medication use less medication. Because the patient is encouraged to take the drug at the onset of pain, less drug is required to control the pain. PCA also combats patients' feelings of powerlessness because they are in control of their analgesic use (within drug dosage limits). According to the volume-pressure curve, initial small increases in intracranial volume in a patient with no brain pathology would have which of the following effects on intracranial pressure (ICP)? Answer: NO EFFECT [Show More]

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